lttng-ust: Fix for --enable-python-agent

Fixed:
PACKAGECONFIG_append_pn-lttng-ust = ' python3-agent'

require conf/multilib.conf
MULTILIBS = "multilib:lib32"
DEFAULTTUNE_virtclass-multilib-lib32 = "x86"

$ bitbake lttng-ust
ERROR: lttng-ust-2_2.10.4-r0 do_package: QA Issue: lttng-ust: Files/directories were installed but not shipped in any package:
  /usr/lib
  /usr/lib/python3.7
  /usr/lib/python3.7/site-packages
  /usr/lib/python3.7/site-packages/lttngust-2.10.4-py3.7.egg-info

(From OE-Core rev: d1b1bfece08ae32c120844d73aadee96de7bbf9b)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-kernel/lttng/lttng-ust/0001-python-lttngust-Makefile.am-Add-install-lib-to-setup.patch

@@ -0,0 +1,31 @@
+From f79dac30af9adda12996da7f6aa6667d3b580537 Mon Sep 17 00:00:00 2001
+From: Robert Yang <liezhi.yang@windriver.com>
+Date: Thu, 26 Sep 2019 17:54:00 +0800
+Subject: [PATCH] python-lttngust/Makefile.am: Add --install-lib to setup.py
+
+Otherwise it may install to /usr/lib, but should be /usr/lib64 when cross
+building.
+
+Upstream-Status: Pending
+
+Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
+---
+ python-lttngust/Makefile.am | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/python-lttngust/Makefile.am b/python-lttngust/Makefile.am
+index 6c0d20d..38b51b8 100644
+--- a/python-lttngust/Makefile.am
++++ b/python-lttngust/Makefile.am
+@@ -9,7 +9,7 @@ install-exec-local:
+ 	if [ "$(DESTDIR)" != "" ]; then \
+ 		opts="$$opts --root=$(DESTDIR)"; \
+ 	fi; \
+-	$(PYTHON) setup.py install $$opts;
++	$(PYTHON) setup.py install $$opts --install-lib=$(pythondir);
+ 
+ clean-local:
+ 	rm -rf $(builddir)/build
+-- 
+2.7.4
+

meta/recipes-kernel/lttng/lttng-ust_2.10.5.bb

@@ -27,6 +27,7 @@ PE = "2"
 
 SRC_URI = "https://lttng.org/files/lttng-ust/lttng-ust-${PV}.tar.bz2 \
            file://lttng-ust-doc-examples-disable.patch \
+           file://0001-python-lttngust-Makefile.am-Add-install-lib-to-setup.patch \
           "
 
 SRC_URI[md5sum] = "f0c86a9fa7dcfd0205fb42584a310b1c"